Plumbing stake



FIG. 1 is a front elevation view of the plumbing stake.

FIG. 2 is a left side elevation view thereof.

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines are included for illustrative purposes and form no partof the claimed design.

The ornamental design for a plumbing stake, as shown and described.